Instructions
Begin a new game or continue a previous game as SpongeBob.
Press the "+" button on the second Wii Remote at any time after the first player has begun to play the level.
Wave the Wii Remote to aim with Plankton. Press the "A" button to use the Grab Ray to hold enemies. Once grabbed, shake the Wii Remote to shake the enemy or move it up and down to slam them into the ground. Press the "B" button to fire your Zap Ray and Stun Ray.
Press the "+" button on the second Wii Remote at any time to have Plankton drop out of the game.
You can temporarily play as other characters, such as Patrick and Sally, whenever you collect their power-up medallion in the game. SpongeBob turns into a weapon, which is used by the other character to perform a team attack for a limited period of time. Afterward, SpongeBob reverts to normal and the character disappears.